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Finding the Third Proportional to 358,679 and 787,018

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Solution

The third proportional to 358,679 and 787,018 is: 1,726,884.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,679 : 787,018 = 787,018 : x
  2. Step 2: Convert to fraction form
    358,679/787,018 = 787,018/x
  3. Step 3: Cross multiply
    358,679x = 787,018 × 787,018
  4. Step 4: Simplify right side
    358,679x = 619,397,332,324
  5. Step 5: Solve for x
    x = 619,397,332,324/358,679
  6. Step 6: Final answer
    x = 1,726,884.85

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.